Akademik

unutterably
adverb
to an inexpressible degree (Freq. 1)
-

she was looking very young tonight, and, as usual, indescribably beautiful, in a simple strapless dress of a green and white silky cotton

Syn: ↑ineffably, ↑indescribably, ↑unspeakably
Derived from adjective: ↑unspeakable (for: ↑unspeakably), ↑unutterable, ↑indescribable (for: ↑indescribably), ↑ineffable (for: ↑ineffably)

Useful english dictionary. 2012.